So after the boot into OS install, it goes directly to step 7/7 in install and after the reboot there was already a user session (pi) and after a quick overview, there are so many bugs and lags : unable to change language, update, keyboard disposition and so on (popup error window appeared) .

After each reboot there is a popup with"the system met a critical error (or something like that).

When launch the LX terminal in order to use grub for boot order, it asked the sudo password, and there is like a bug, I can't write something, nothing works.

I downloaded 18.04 version of lubuntu and write it with rufus and unetbootin but even by using the boot button, nothin happened, unable to select boot roder or to boot directly on sd card with files.

Is there a way to make a clean install os Lubuntu (16.04 or 18.04 directly if possible ?

So after the boot into OS install, it goes directly to step 7/7 in install and after the reboot there was already a user session (pi) and after a quick overview, there are so many bugs and lags : unable to change language, update, keyboard disposition and so on (popup error window appeared) .

After each reboot there is a popup with"the system met a critical error (or something like that).

When launch the LX terminal in order to use grub for boot order, it asked the sudo password, and there is like a bug, I can't write something, nothing works.

I downloaded 18.04 version of lubuntu and write it with rufus and unetbootin but even by using the boot button, nothin happened, unable to select boot roder or to boot directly on sd card with files.

Is there a way to make a clean install os Lubuntu (16.04 or 18.04 directly if possible ?